Condensation of metal vapor

Abstract

A lead-splash condenser for condensing metal vapor from a hot gas stream, comprising a plurality of condensation chambers, spray generating means provided in each condensation chamber, an inlet for passage of a hot gas containing metal vapor to the first condensation chamber, an outlet for passage of the gas from the last condensation chamber, and a stack communicating with the outlet of the last condensation chamber, wherein the stack is provided with gas deflector means for deflecting the gas stream from the side wall of the stack facing the outlet of the last condensation chamber so as to obtain a more uniform gas distribution in the stack, and to thereby reduce the rate of droplet elutriation in the gas stream leaving the condenser.

What I claim is: 
     
       1. A lead-splash condenser for condensing metal vapor from a hot gas stream, comprising a plurality of intercommunicating condensation chambers; spray generating means provided in each condensation chamber; an inlet for passage of a hot gas containing metal vapor to the first condensation chamber, said inlet communicating with said first condensation chamber; an outlet for passage of the gas from the last condensation chamber, said outlet communicating with said last condensation chamber; and a stack communicating with said outlet, wherein the stack is provided with gas deflector means for deflecting the gas stream from the side wall of the stack facing said outlet so as to obtain a more uniform gas distribution in the stack. 
     
     
       2. The condenser according to claim 1, wherein the gas deflector means comprises a recess formed in the side wall of the stack facing said outlet. 
     
     
       3. The condenser according to claim 1, wherein the gas deflector means comprises a baffle disposed at a height above said outlet and projecting inwardly from the side wall of the stack which faces said outlet. 
     
     
       4. The condenser according to claim 3, wherein the baffle is inclined downwardly at an angle of from 50° to 80° to the horizontal. 
     
     
       5. The condenser according to claim 1, wherein the gas deflector means comprises a portion of the stack tapered towards said outlet to form a throat.